哈密黑山口地区遥感蚀变信息提取特征波段优选研究

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在遥感蚀变信息提取研究中,特征波段的选取是主要的技术关键。本文以新疆哈密市黑山口地区为研究区,利用ETM卫星遥感数据,在光谱数据空间几何结构特征分析的基础上,通过对七个多光谱波段的回归偏度分析,评价蚀变信息的客观存在性,从而选取出针对不同蚀变类型的特征波段,然后采用主成分分析、最优密度分割等方法,提取出矿化蚀变信息,并对结果信息进行了评价。通过野外地质调查和光谱测量的实地验证,提取的蚀变信息与实地情况吻合性好,取得了较理想的效果。结论认为,次级断裂构造带上含矿化蚀变的铁镁质岩体找矿前景较好。
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